If you use an English-Japanese Dictionary when studying something; Science, Programming and so on in English, you should not use such translated dictionaries.
When you learn something in English, You should use English only, that is, reading text only in English, using English-English dictionary, thinking in English.
Learning Languages (English, Chinese or some other lanuages) is not the same for studying arts, science or something in your country language.
It's related to your unconscious process very closely. So, however hard you "study" the language, It doesn't make sence.
The process of aquireing languages include unconscious process. So you should use only English, and repeatedly listening, reading, and using dictionary to understand meaning of the words like baby or child.